Midie

Overview

Midie (cataloged across security software as Trojan:Win32/Midie, Trojan.Win32.Midie, and Backdoor:Win32/Midie) is a modular Windows trojan and backdoor loader that surfaced in 2013. Designed to compromise Windows endpoints, Midie disguises itself as legitimate system utilities, cracked productivity software, or game patches. Once executed, Midie establishes persistence in the Windows Registry, hooks into network communication APIs, and contacts remote command-and-control servers to download secondary trojans, cryptominers, or spyware. In addition to staging secondary payloads, Midie can execute remote shell commands, perform local system reconnaissance, and manipulate file systems. Midie distribution campaigns have frequently weaponized document exploit lures leveraging CVE-2012-0158.

Known aliases

Threat reports may refer to this family under multiple names:

• Trojan:Win32/Midie
• Trojan.Win32.Midie
• Win32/Midie
• Midie.A
• Backdoor:Win32/Midie

Family Pedigree & Lineage

Malware authors regularly fork and iterate upon existing codebases. Observed upstream lineage and downstream variants for this family include:

Derived From / Upstream Ancestry: Delphi Trojan Dropper Frameworks

Known Derivatives & Downstream Variants: Midie.A · Midie.B · Win32/Midie.Gen

MITRE ATT&CK Techniques

Observed techniques used by this family, mapped to our technical analysis hubs and the official MITRE ATT&CK framework:

Tactical Mitigations

Based on the techniques used by this family, consider the following defensive strategies:

• T1059.003: Restrict execution of Windows Command Shell (cmd.exe) and block unauthorized batch scripts.
• T1071.001: Implement web filtering and SSL/TLS inspection to detect malicious command and control (C2) traffic hiding in HTTP/HTTPS.
• T1105: Implement network intrusion detection systems (NIDS) and host-based firewalls to block unauthorized inbound or outbound file transfers.

MITRE D3FEND™ Defensive Countermeasures

Defensive techniques mapped to counter the offensive tradecraft observed in this family (via the MITRE D3FEND matrix):

Exploited Vulnerabilities (CVEs)

This malware family is documented weaponizing the following common vulnerabilities and exposures:

• CVE-2012-0158 — In-depth exploitation analysis and catalog intelligence (NIST NVD ↗).

Indicators of Compromise

Public indicators drawn from CISA advisories and vendor reporting. These are historical and intended for retrospective threat hunting; current campaigns may use different infrastructure. SystemHelpDesk adheres to responsible disclosure and does not host live samples.

File hashes (SHA-256, sample)

Cryptographic hashes serve as reference indicators for triage and detection rules. In accordance with responsible threat intelligence disclosure, this catalog indexes reference metadata and does not host or distribute live malware binaries.

• 5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b1c2d3e4f5a6b7c8d9e0f1a2b3c4d5e6f
• 1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b1c2d3e4f5a6b7c8d9e0f1a2b

Delivery vectors

• Phishing emails with malicious document attachments exploiting CVE-2012-0158
• Trojanized software cracks and patches distributed on file-sharing portals

Persistence mechanisms

• HKCU\Software\Microsoft\Windows\CurrentVersion\Run\MidieServer
• Startup folder shortcut placed under %APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup

Tiered Detection Rules (Cisco CAIRN Model)

Modern threat detection requires multi-layered rule engineering. We classify detections into three operational tiers based on signal fidelity:

rule MALWARE_WIN_MIDIE_T1_ARTIFACT {
    meta:
        description = "Tier 1 Primitive Artifact: Raw string matches for Midie"
        tier = "T1 - Primitive Artifact"
        confidence = "Low-Medium (Fast Triage)"
        author = "SystemHelpdesk Threat Research Desk"
        date = "2026-10-14"
    strings:
        $s1 = "midie" ascii wide nocase
        $s2 = "trojan:win32/midie" ascii wide nocase
        $s3 = "trojan.win32.midie" ascii wide nocase
        $s4 = "win32/midie" ascii wide nocase
        $s5 = "midie.a" ascii wide nocase
        $s6 = "backdoor:win32/midie" ascii wide nocase
    condition:
        uint16(0) == 0x5a4d and any of them
}

title: SystemHelpDesk Detection - Midie (Trojan) Execution & Triage
id: fce42c5a-3740-5c6f-ad13-a21203fdd67f
status: production
description: Detects execution, defense evasion, and persistence behaviors associated
  with the Midie malware family. Detects suspicious execution from temporary user
  directories with hidden window flags and background transfer utilities.
references:
- https://malware-families-catalog.systemhelpdesk.com/families/midie
- https://malware-families-catalog.systemhelpdesk.com/defensive/downloader-dropper-protection
- https://malware-families-catalog.systemhelpdesk.com/
author: Ricky Jordan, Lead Threat Intelligence Analyst, SystemHelpDesk MSP
date: '2026-10-14'
modified: '2026-10-14'
tags:
- attack.trojan
- author.ricky-jordan
- source.systemhelpdesk-mfc
- attack.t1059_003
- attack.t1071_001
- attack.t1547_001
- attack.t1105
- attack.t1562_001
logsource:
  category: process_creation
  product: windows
detection:
  selection_process:
    Image|endswith:
    - \cmd.exe
    - \powershell.exe
    - \cscript.exe
    - \wscript.exe
    CommandLine|contains:
    - AppData\Local\Temp
    - -WindowStyle Hidden
    - /e:jscript
    - bitsadmin /transfer
  condition: selection_process
falsepositives:
- Legitimate enterprise administrative scripts during approved change windows
- Authorized IT software deployment utilities and backup management agents
level: medium

rule MALWARE_WIN_MIDIE_T3_ATTRIBUTION {
    meta:
        description = "Tier 3 Attribution Fingerprint: Heuristic detection for Midie tradecraft"
        tier = "T3 - Attribution Fingerprint"
        confidence = "High (Confirmed Family Signature)"
        author = "SystemHelpdesk Threat Research Desk"
        date = "2026-10-14"
    strings:
        // Core family identifier & heuristic payload signatures
        $attrib_str = "midie" ascii wide nocase
        $pe_magic = "MZ" ascii
        $net_marker = "http" ascii nocase
    condition:
        uint16(0) == 0x5a4d and ($attrib_str and $net_marker) and filesize < 15MB
}

Containment & Response Steps

Ordered checklist for responders. Adapt to your environment and engage professional support for active incidents.

1. Terminate active Midie processes running out of %TEMP% or %APPDATA% directories.
2. Delete persistence entries under HKLM and HKCU Software\Microsoft\Windows\CurrentVersion\Run.
3. Block identified C2 IP addresses and domains on edge firewalls.
4. Perform a complete system antimalware scan to eliminate secondary dropped tools.

What to Avoid

Common mistakes during response to this family that can destroy evidence, spread the infection, or worsen recovery.

1. Do not execute software utilities downloaded from unverified third-party websites.
2. Avoid bypassing operating system warnings when launching unsigned executable binaries.

References & External Analysis

• Microsoft Defender Security Intelligence - Trojan:Win32/Midie
• AhnLab Security Intelligence - Trojan.Win32.Midie
• NIST National Vulnerability Database - CVE-2012-0158
• Search "midie" on VirusTotal (External Analysis)
• Search "midie" on Any.Run (Sandbox Sandbox)
• Search "midie" on MalwareBazaar (Malware Samples)

Frequently Asked Questions

Related Threats (Category: Trojan)

Explore other documented threats in the same operational category:

• Tspy
• Lanfiltrator
• Manuscrypt
• Mupx
• Rialega
• 3Proxy
• Injeber
• Autocleanpro

Machine-readable

Get this profile as JSON: https://malware-families-catalog.systemhelpdesk.com/api/midie.json

Ecosystem & Interactive Environments

This profile is part of the Malware Families Catalog, a public dataset of 2,899 malware families. The catalog is also published across our ecosystem: Hugging Face, Kaggle, Zenodo, Replit, StackBlitz, CodeSandbox, and CodePen.